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Finding the Fourth Proportional to 159,740.64, 220,442.12 and 88,120.84

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Solution

The fourth proportional to 159,740.64, 220,442.12 and 88,120.84 is: 121,606.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,740.64 : 220,442.12 = 88,120.84 : x
  2. Step 2: Convert to fraction form
    159,740.64/220,442.12 = 88,120.84/x
  3. Step 3: Cross multiply
    159,740.64x = 220,442.12 × 88,120.84
  4. Step 4: Simplify right side
    159,740.64x = 19,425,544,785.78
  5. Step 5: Solve for x
    x = 19,425,544,785.78/159,740.64
  6. Step 6: Final answer
    x = 121,606.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.